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REPAIR PARTS
TRACTOR ..- MODEL NUMBER
917.258470
BRIGGS
& STRATTON
ENGINE - MODEL NUMBER
28N707, TYPE NUMBER
0173-0t
KEY PART
KEY PART
NO. NO.
DESCRIPTION
NO. NO.
DESCRiPTiON
1
496412
2
399265
3
391086
5
495858
7
272614
8
495735
9
27803
10
94621
11
281246
12
271916
271997
271996
13
94728
15
94239
16
495162
94196
18
494238
20
291675
22
94624
23
492326
24
25
26
27
28
29
32
32A
33
34
35
37
40
45
46
51
52
53
75
78
222698
495860
495977
495978
495979
495854
495852
495851
495855
260924
299691
391286
494504
495490
94695
94648
495856
495857
262811
224502
224641
262411
496884
272465
272569
94637
224061
94832
Cylinder Assembly
95
Bearing, Cylinder
98
* Sea!, Oil
104
Head, Cylinder
105
*** Gasket, Cylinder Head
106
Breather Assembly
108
* Gasket, Valve Cover
117
Screw, Sems
118
Tube, Breather
121
* Gasket, Crankcase Cover, .0t5"
123
* Gasket, Crankcase Cover, .005"
t25
* Gasket, Crankcase Cover, .009"
t27
Screw, Cylinder Head
130
Plug, Oil Drain
131
Crankshaft
133
Timing Gear Key
137
Base, Engine
138
* Seal, Oil
141
Screw, Sems, Base Mounting
142
Flywheel and Ring Gear Assembly,
147
Magneto
164
Key, Flywheel
166
Piston Assembly, Standard Size
171
Piston Assembly, .010" Oversize
187
Piston Assembly, .020" Oversize
188
Piston Assembly, .030" Oversize
192
Ring Set, Piston, Standard Size
20I
Ring Set, Piston, .010" Oversize
209
Ring Set, Piston, .020" Oversize
2!6
Ring Set, Piston, .030" Oversize
219
Lock, Piston Pin
222
Pin Assy., Piston, Standard Size
224
Pin Assy., Piston, .005" Oversize
225
Rod Assembly, Connecting
227
Rod Assembly, Connecting,
230
.020" Undersize Crankpin Bore
232
Screw, Hex Washer Head, 1-57/64
238
Screw, Hex Washer Head, 1-5/8
"
240
Valve, Exhaust
265
Valve, Intake
284
Spring, Valve
Guard, Flywheel
Retainer, Valve Spring
Tappet, Valve
Gear, Cam
.... Gasket, Carburetor (Carburetor to
***
Elbow) (Also Included in Gasket
Set, Part Number 495993)
*** Gasket, Carburetor
....
(Elbow to Cylinder)
Stud, Carburetor Mounting
Washer, Spring
Screw, Pan Head
94098
495800
231789
231855
231854
224540
231858
495932
498116
94616
498051
224539
494379
494381
281165
281164
495931
231859
497472
214047
94555
281051
393815
94627
492160
262767
260695
262766
490815
495611
94729
495157
493935
94742
262785
262836
394358
221535
94704
** Screw, Throttle
Screw, Idle Speed
** Pin, Float Hinge
** Valve Float
** Seat, Inlet Valve
Valve, Choke
** Jet, Needle Valve
Valve, Needle
Carburetor Overhaul Kit
Screw, Elbow Mounting
Carburetor Assembly
** Plug, Welch (Sold in Kit Only)
Valve, Throttle
Shaft and Lever, Throttle
Float, Carburetor
.... Gasket, Float Bowl
.... Washer, Bowl
Shaft and Lever, Choke
** Nozzle, Carburetor
** Pilot, Jet
Elbow, Carburetor
Stud, Rocker Arm
Nut, Air Cleaner Mounting
Line, Fuel (11" Long, Cut to Suit)
Screw, Sems
Screw Assembly, Rocker Arm
Link, Governor
Spring, Governor
Link, Choke
Gear, Governor
Plate, Governor Control
Screw, Sems, Air Cleaner
Crank, Governor
Lever Assembly, Governor
Washer, Governor Crank
Spring, Governor Link
Cap, Valve
Filter, Fuel (ln Fuel Line)
Clamp, Casing
Screw, Hex Head
*
Included in Gasket Set (495993)
**
Included in Carburetor Kit (497535)
Included in both Gasket Set (495993) and
Valve Overhaul Kit (495992)
Included inGasket
Set (495993i, Carburetor Kit
(497535) and Carburetor Gasket Set (494385)
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
54
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